Production of cyanid and cyanamid.



i 35 mid, and lime outrun sunrise rstrnnr union.

CARL BOflCll AND ALWIN MIlTASUH, OF L'UD\\ IG S1IAI?EN-ON-THE-BHINE, GERMAZNY, ASSIGN ORS TO BAIDISCHE A NILIN S: SODA. FA ERIK, OF LUDWIGSHAFEN-ON-THE-RHIN E, GER- MANY, A CORPORATION 01 GERMANY.

PRODUCT'ON OF GYANID AND GYANAMID.

. Specification of Letters Patent.

7 Patented May 25, 1909 To all whom. it may concern:

Beit known that we, CARL Boson. and AL- .WiN Mrrmsou, doctors olphilosophy and "chemists, subjects, respectively, of the King of Prussia. and the King of Saxony, residing at Ludwigshoien-on-the-Rhino, Germany, have invented 116 Y and useful Improvements in the Prmlurtion of Cyn-nids and ilysnsmids, of which the following is specification.

We have disciiwcred that the tito'niun nitrids, under which term We include cornpounds containing onlytitaniuni and nitro gen, also the so-cslled titanium oyanonitrid, can be easily converted into cycuids, or cysna-niids, of the alkali metals, or of the alkaline earth metals, by hosting the selected titanium connmurul With curbon intlie presence of an oxid, or o carbonate, or sulfate, or other salt, of on alkali metal, or of on alkalinc earth, .uictsl. if desired, a. mixture of two, or more, oi such metallic onids, or salts, can be ol'nploycd. The rcr *tion may, if desired, be curried out in tho presence of s. llux- .ing agent; "The carbon may be employed, for instance, in the for-moi soot, or cool, or of u compound (umtziining carbon (such for instance as pitch), and instead of these onin addition thereto, gases capable of yielding col-lion, such for instance as scetylene, may be passed into the heated i'nixture.

As a rule when o potassium, or a sodium, cmupound is employed, an alkali oyanid re sulis, hut barium hydroxid gives rise to a.

, mixture of barium cyonid and barium cyona yields chiefly calcium cyanomid.

The process of the present invention is perticulorly mluoble since the titanium is obtained in n Form in which it can easily be reconverted into its nitrogen, or its csrhon-ui-- trogen, coiuimunds and thus a dciinit'c quan tity of titanium can be used in the production oi an. indefinite quantity of cynnid, or

. cysnoinid.

454 For the purposes of this invention, the tituniuin nitride and. titanium cyononitrid ore equivalents.

. he following examples will serve to illus-- 'trutc further the nature 01 our invention, which, however, is not confined to these we m'nplcs, and the method of carrying it into practical efl'ect. The parts are by Weight.

Example 1 Melt together, for 30 minutes, at u red heat 10 parts of titanium cysnonitrid, 16 ports of anhydrous sodium csrbonate, and 1 psrtof soot. When the melt is cold, the sodium cyonid contained therein can be treated in any convenient manner.

Example 2': lllolttog ether, for 30 minutes,

at a red host, 12 parts of a mixture ofmoleculsr roportions of potassium carbonate and sodnun carbonate, 1* port of soot, and 3 parts of titanium nitrid prepared liy'trcating ti tsnium tetruchlorid with onunonis; The reaction which takes place can be represented by the equation T1,N, M no, o rte, znsou.

Examine 3: Melt together, for 1 hour, at a. yellow hea t, a mixture of 30 parts of beriurn oXid and 6 psrtsof barium chlorid, 6 parts of titanium cysnonitrid, and 1 part of soot. The product contains barium oyalnid and barium cysnaunid.

Exzunple 4: Heat together, for 15 minutes, at a yellow heat, 12 parts of uicklimc, 24 ports of anhydrous calcium ch orid, 4 ports of titaniumcysnonitrid, and 1 part of soot. The product contains calcium cyanamid and small quantities of calcium cyanid.

Now what we claim is:

l. The production of cyanids and cysna mids of the alkali metals and. of the alkaline earth metals by heating a titanium nitrid with carbon in the presence of a hefeinhefore defined metallic compound.

2. The production of sodium cyanid by heating a titanium nitrid with carbon in the presence of sodium. salt.

3. The production of sodium cysnid by hosting titanium nitrid with carbon in the presence of sodium carbonate.

in testimony whereof We have hereunto set our hands in the presence of two suhscribing witnesses.

' CARL BOSCH.

ALVJIN MITTASCH.

Witnesses i J. ALEo. LLOYD, Jos. H. LEUTE. 

